In order to overcome the disturbance of noises, a robust identification method of water quality model parameters namely trust region algorithm based on M-estimation is proposed.

为了克服随机噪声对河流水质模型参数估计的干扰，提出了一种水质模型参数的鲁棒估计方法，即基于M -估计的信赖域算法。

youdao

M: Well, we've settled the problems of price, quality and quantity. What mode of payment do you wish to employ?

M：好的，我们已经解决了价格、质量和数量问题，你想采用什么样的付款方式？

youdao

M: it's a document from the seller to the buyer. It contains full particulars of the goods sold, such as quantity, quality, price, forwarding particulars, and terms of payment.

M：是一种从卖家到买家的文件，它包括销售商品的所有细节，比如数量、质量、价格、运输细节和付款方式。

youdao

"I'm seeing quality companies at five and six times earnings, with dividend yields at or near double digits, " he says.

WSJ: Upside: Signs of Hope for Stock Investors

"That was our best game on tour - we played some quality rugby and I'm delighted with what they've done, " said Henry.

BBC: Johnson senses England progress

And because the best form of economic relief is a quality job, I'm also calling on Congress to pass jobs measures that cut taxes, increase lending, incentivize expansion for businesses both large and small.

WHITEHOUSE: Creating New Jobs in a Clean Energy Economy